1.4410 Weld Neck Flanges Super Duplex 1.4410 flange EN 1092-1
1.4410 WNRF Flanges – Super Duplex EN 1092-1 Flanges Manufacturer & Supplier
We are a trusted manufacturer and exporter of 1.4410 weld neck flanges, also known as Super Duplex stainless steel weld neck flanges, manufactured according to EN 1092-1 standards. Grade 1.4410 (equivalent to UNS S32750) offers outstanding resistance to pitting, crevice corrosion, and chloride stress corrosion cracking, making it ideal for harsh marine and chemical environments.
Our EN 1092-1 1.4410 weld neck flanges are designed for high-pressure applications, with a tapered hub for smooth stress distribution and a strong, leak-proof joint when welded to matching pipes.
1.4410 Material Specification
Material Name: Super Duplex Stainless Steel
EN Designation: 1.4410
UNS Number: S32750
Common Trade Name: SAF 2507
1.4410 Chemical Composition (%) (Typical according to EN 10088-3)
| Element | Percentage (%) |
|---|---|
| C (Carbon) | ≤ 0.030 |
| Si (Silicon) | ≤ 0.80 |
| Mn (Manganese) | ≤ 1.20 |
| P (Phosphorus) | ≤ 0.035 |
| S (Sulfur) | ≤ 0.020 |
| Cr (Chromium) | 24.0 – 26.0 |
| Mo (Molybdenum) | 3.0 – 5.0 |
| Ni (Nickel) | 6.0 – 8.0 |
| N (Nitrogen) | 0.24 – 0.32 |
| Fe (Iron) | Balance |
| Property | Value |
|---|---|
| Tensile Strength (Rm) | ≥ 800 MPa |
| Yield Strength (Rp0.2) | ≥ 550 MPa |
| Elongation (A5) | ≥ 15% |
| Hardness (HB) | ≤ 290 HB |
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Excellent resistance to pitting and crevice corrosion in chloride-containing environments.
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PREN (Pitting Resistance Equivalent Number) > 40.
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Superior resistance to stress corrosion cracking (SCC) compared to austenitic stainless steels.
1.4410 Flange Specifications
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Material: Super Duplex Stainless Steel 1.4410 (EN designation), equivalent to ASTM A182 F53
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Standard: EN 1092-1 (Type 11 – Weld Neck),EN 1092-1 Type 05 Blind Flange
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Sizes: DN 15 to DN 2000 (1/2″ to 80″)
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Pressure Ratings: PN 6 to PN 400
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Face Type: RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint)
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Manufacturing: Forged, heat treated, and precision machined
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Certification: EN 10204 3.1 / 3.2, PED, NACE MR0175 compliance
Benefits of 1.4410 Super Duplex Flanges
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High strength & durability – nearly twice the yield strength of conventional austenitic stainless steels
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Excellent corrosion resistance – suitable for seawater, offshore oil & gas, desalination, and chemical processing
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Cost-effective – longer service life reduces replacement and downtime costs
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Superior weldability – suitable for both onshore and offshore fabrication projects
Applications
Our 1.4410 EN 1092-1 weld neck flanges are widely used in:
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Offshore oil & gas platforms
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Desalination plants and seawater treatment
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Chemical and petrochemical plants
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Pulp & paper industry
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Power generation and heat exchangers
Quality Assurance
Each Super Duplex 1.4410 weld neck flange is produced under strict quality control, using advanced forging and machining equipment. All flanges are tested for dimensional accuracy, pressure integrity, and corrosion resistance, ensuring full compliance with EN 1092-1 and customer specifications.
If you are looking for a reliable supplier of EN 1092-1 Super Duplex 1.4410 weld neck flanges, contact us today for competitive prices and fast delivery worldwide.
